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kompoz [17]
3 years ago
10

How can cyanobacteria in contrast to saprotrophic bacteria, live in an enviroment that lacks organic material?

Biology
1 answer:
Finger [1]3 years ago
5 0
They can utilize nitrogen from the air and are photosynthetic.
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Explain how the burning of the food calories in the burning of the wood are similar and how they are different
bekas [8.4K]
Similarity: both burnings lead to energy production and both result in CO2 emission.
difference: food is burned in the process called cellular respiration. this process consists of a few certain stages preventing our body from heat shock.
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Cells with a full set of chromosomes are referred to as diploid or 2n, whereas cells with half the chromosomes are haploid or n.
Papessa [141]

Answer:

  • Diploid → Prophase, metaphase, and anaphase
  • Haploid → Telophase

Explanation:

During prophase I,  chromosomes get condensed. Each of the chromosomes gets in pair with its homologous one. They do so to make the crossing-over possible, a stage where they interchange their parts → 2n

During metaphase I, each of the homologous pairs is driven to the equatorial plane, where they randomly line up → 2n

During anaphase I, occurs the independent separation of homologous chromosomes that migrate to opposite poles of the cell. This separation generates different chromosomal combinations in the daughter cells. There are two alternatives per homologous pair → 2n  

In telophase I, half of the chromosomes are already in one of the poles, while the other half is on the other pole. Each group of chromosomes has now half the number of the original cell. The nuclear membrane forms again in each pole → n

Finally, occurs cytokinesis, which involves the invagination of the cell membrane and cytoplasmic division.

The two new cells are ready for meiosis II.

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3 years ago
Do stomata open when there is an abundance of water during the daytime or nighttime?
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Stomata open in the daytime, when there is an abundance of heat energy from the sun that causes evaporation of water, causing the guard cells to become flaccid, allowing the stomata to open.

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5. Mutations in DNA occur when there is a change in the base-pair sequence of a
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C. Mutations always cause a change in the in the way an organism looks.

Explanation:

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